Hello! I tried to use this library. With unicast mode it works perfect, but when my app share broadcast ArtNet, my Arduino Mega doesn't receive anything. My app provides broadcast ArtNet for x.255.255.255 address. And also, I figured out that other apps that can share full broadcast ArtNet (255.255.255.255) work good with this library. I captured UDP packets from different app and figured out that only Destination IP Address parameters are different. Do you have any idea?

Hi, Im pretty new to this so im not sure how the coding of this should work. I am trying to implement Art-Net onto a PAR style light over wifi with an esp8266. The light is a single RGB setup (no pixels), and i would like the esp to act as the receiver and light the rgb via the pwm pins. Any idea how the sketch might look?
Thanks.

Hi there, thanks for this library.

I just wanted to let you know that an error will now be encountered uploading this zip as a custom library without a library.properties file with the following metadata: https://arduino.github.io/arduino-cli/library-specification/#libraryproperties-file-format

Without it, the error [] library.properties not found is thrown

A minimal viable fix is a library.properties file with roughly the following:

name=Artnet-Master
version=1.0.0
author=Cristian Maglie <[email protected]>, Pippo Pluto <[email protected]>
maintainer=Cristian Maglie <[email protected]>
sentence=A library that makes coding a Webserver a breeze.
paragraph=Supports HTTP1.1 and you can do GET and POST.
category=Communication
url=http://example.com/
architectures=avr
includes=WebServer.h
depends=ArduinoHttpClient

Is there a way to compile your code https://github.com/natcl/Artnet/blob/master/examples/ArtnetNeoPixel/ArtnetNeoPixel.ino for Fadecandy Server https://github.com/scanlime/fadecandy to receive Artnet values?

Hi,
got random colors and flickering with my ESP32 and SK6812 using ArtnetNeoPixelESPSync.
I am sending effects from Touchdesigner and it's working great but I still have random flickering (first led is most of the time green) any idea ?
Power is enough and got GND connected to the ESP board, tried add a delay after leds.show(); but doesn't help, tried without my Adafruit OLED FeatherWing screen but doesn't help neither.

Working on wondows 10 and Feather HUZZAH32 by Adafruit, Arduino SDK 1.8.5
Also included those .h

#include <SPI.h>
#include <Artnet.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_NeoPixel.h>

Thanks for your work and for helping !

Can't get the arduino mega with ethernet 2 sheild to reply with any serial or get past artnet.begin(mac, ip). If I only include artnet.begin() then it can run past the .begin statement, but does not operate with a mac or ip address. I'm using the standard Ethernet library. Using Ethernet2 library causes errors.

Hi, I love your project. i have an unbranded chinese node that uses its own app to work. I am trying to build another one with your library. but the software does not detect it. I clone all the data I found mac, name, manufacturer, etc but still not detected and looking at the traffic I found an unknown opcode that doesn't follow artnet rules, besides port changes.

capture the packets and forward them. and got the software to activate. I need to send this package as a replica to the software but my knowledge does not reach such a point to modify your library I enclose the package that my node sends to the app

Ip 2.0.0.1 software

User Datagram Protocol, Src Port: 6455, Dst Port: 6454
Source Port: 6455
Destination Port: 6454
Length: 247
Checksum: 0xba90 [unverified]
[Checksum Status: Unverified]
[Stream index: 32]
[Timestamps]
UDP payload (239 bytes)

Art-Net, Opcode: ArtPollReply (0x2100)
Descriptor Header
ID: Art-Net
OpCode: ArtPollReply (0x2100)
ArtPollReply packet
IP Address: 2.0.0.1
Port number: 6454
Version Info: 0x0100
NetSwitch: 0x00
SubSwitch: 0x00
Oem: Simon Newton: LibArtNet (0x0430)
UBEA Version: 0
Status: 0x00, Port Address Programming Authority: unknown, Indicator State: unknown
ESTA Code: ESTA/PLASA (0x0000)
Short Name: 4 Universes Input
Long Name: 4 Universes Input Service
Node Report: 0000 [0000] libartnet
Port Info
SwVideo: Displaying local data (0x00)
SwMacro: 0x00
SwRemote: 0x00
spare: 000000
Style: StNode (Art-Net to DMX device) (0x00)
MAC: Broadcast (ff:ff:ff:ff:ff:ff)
Bind IP Address: 0.0.0.0
Bind Index: 0x00
Status2: 0x00, Port-Address size: 8bit Port-Address
filler: 0000000000000000000000000000000000000000000000000000

User Datagram Protocol, Src Port: 6455, Dst Port: 6454
Source Port: 6455
Destination Port: 6454
Length: 22
Checksum: 0x4a22 [unverified]
[Checksum Status: Unverified]
[Stream index: 32]
[Timestamps]
UDP payload (14 bytes)

Art-Net, Opcode: ArtPoll (0x2000)
Descriptor Header
ID: Art-Net
OpCode: ArtPoll (0x2000)
ProtVer: 14
ArtPoll packet
TalkToMe: 0x06, Send me ArtPollReply on change, Send diagnostics messages, Send diagnostics unicast: Broadcast
Priority: DpAll (0)

Ip 2.0.0.2 hardware

User Datagram Protocol, Src Port: 6454, Dst Port: 6455
Source Port: 6454
Destination Port: 6455
Length: 247
Checksum: 0x4a6c [unverified]
[Checksum Status: Unverified]
[Stream index: 33]
[Timestamps]
UDP payload (239 bytes)

Art-Net, Opcode: ArtPollReply (0x2100)
Descriptor Header
ID: Art-Net
OpCode: ArtPollReply (0x2100)
ArtPollReply packet
IP Address: 2.0.0.2
Port number: 6454
Version Info: 0x0100
NetSwitch: 0x00
SubSwitch: 0x00
Oem: Simon Newton: LibArtNet (0x0430)
UBEA Version: 0
Status: 0xe0, Port Address Programming Authority: network, Indicator State: Normal Mode
ESTA Code: ESTA/PLASA (0x0000)
Short Name: AG_11277CE2F73C00
Long Name: AG ArtNet4DMX512_Service
Node Report: https://github.com/rstephan/ArtnetnodeWifi/issues/1[2]RuningOK
Port Info
Number of Ports: 4
Port Types
Type of Port 1: Art-Net <-> DMX512 (0xc0)
Type of Port 2: Art-Net <-> DMX512 (0xc0)
Type of Port 3: Art-Net <-> DMX512 (0xc0)
Type of Port 4: Art-Net <-> DMX512 (0xc0)
Input Status
Input status of Port 1: 0x00
Input status of Port 2: 0x00
Input status of Port 3: 0x00
Input status of Port 4: 0x00
Output Status
Output status of Port 1: 0x80
Output status of Port 2: 0x80
Output status of Port 3: 0x80
Output status of Port 4: 0x80
Input Subswitch
Input Subswitch of Port 1: 0x00
[Universe of input port 1: 0]
Input Subswitch of Port 2: 0x01
[Universe of input port 2: 1]
Input Subswitch of Port 3: 0x02
[Universe of input port 3: 2]
Input Subswitch of Port 4: 0x03
[Universe of input port 4: 3]
Output Subswitch
Output Subswitch of Port 1: 0x00
[Universe of output port 1: 0]
Output Subswitch of Port 2: 0x01
[Universe of output port 2: 1]
Output Subswitch of Port 3: 0x02
[Universe of output port 3: 2]
Output Subswitch of Port 4: 0x03
[Universe of output port 4: 3]
SwVideo: Displaying local data (0x00)
SwMacro: 0x00
SwRemote: 0x00
spare: 000000
Style: StNode (Art-Net to DMX device) (0x00)
MAC: 08:bb:e7:06:bf:da (08:bb:e7:06:bf:da)
Bind IP Address: 2.0.0.2
Bind Index: 0x01
Status2: 0x08, Port-Address size: 15bit Port-Address
filler: 0000000000000000000000000000000000000000000000000000

User Datagram Protocol, Src Port: 6455, Dst Port: 6455
Source Port: 6455
Destination Port: 6455
Length: 76
Checksum: 0xabfb [unverified]
[Checksum Status: Unverified]
[Stream index: 34]
[Timestamps]
UDP payload (68 bytes)

Art-Net, Opcode: Unknown (0x1005)
Descriptor Header
ID: Art-Net
OpCode: Unknown (0x1005)
ProtVer: 14
Data: fa2e00c6cec9beb4bcf99fc7fa2e00c6cec9beb4bcf99fc7fa2e00c6cec9beb4bcf99fc7f74418f94025f74418f94025f74418f94025f3ff

I wanna first thank you for your library...

I'm new with arduino and i'm trying to control high power leds with your code.

I had no problem to receive ArtNet and to patch one led on Universe 0 and address 0 ... but i want to know if there is a simple way to patch it to another universe...and also to limit listening to one universe to save memory...

Thank you so much for your contribution

Laurent

I have a setup which works fine on esp32 over Wifi using your library, but the esp32 board that I am using has Ethernet port as well and I would like to use Ethernet instead of Wifi to receive DMX data.

This is the board I am refering to, see below: (but there are other boards as well such as wesp32)
https://www.olimex.com/Products/IoT/ESP32/ESP32-POE-ISO/open-source-hardware
I can not seem to be able to receive any Art-net over Ethernet.

Below is one of your examples just slightly modified:

#define ETH_CLK_MODE ETH_CLOCK_GPIO17_OUT
#define ETH_PHY_POWER 12

#include <Artnet.h>
#include <ETH.h>
#include <SPI.h>

static bool eth_connected = false;
byte ip[] = {192, 168, 0, 90};
byte mac[] = {0x30, 0xAE, 0xA4, 0x9F, 0xF7, 0xA7};
Artnet artnet;

void WiFiEvent(WiFiEvent_t event)
{
    switch (event)
    {
    case SYSTEM_EVENT_ETH_START:
        Serial.println("ETH Started");
        // set eth hostname here
        ETH.setHostname("esp32-ethernet");
        break;
    case SYSTEM_EVENT_ETH_CONNECTED:
        Serial.println("ETH Connected");
        break;
    case SYSTEM_EVENT_ETH_GOT_IP:
        Serial.print("ETH MAC: ");
        Serial.print(ETH.macAddress());
        Serial.print(", IPv4: ");
        Serial.print(ETH.localIP());
        if (ETH.fullDuplex())
        {
            Serial.print(", FULL_DUPLEX");
        }
        Serial.print(", ");
        Serial.print(ETH.linkSpeed());
        Serial.println("Mbps");
        eth_connected = true;
        break;
    case SYSTEM_EVENT_ETH_DISCONNECTED:
        Serial.println("ETH Disconnected");
        eth_connected = false;
        break;
    case SYSTEM_EVENT_ETH_STOP:
        Serial.println("ETH Stopped");
        eth_connected = false;
        break;
    default:
        break;
    }
}

void onDmxFrame(uint16_t universe, uint16_t length, uint8_t sequence, uint8_t* data, IPAddress remoteIP)
{
  // print out our data
  Serial.print("universe number = ");
  Serial.print(universe);
  Serial.print("\tdata length = ");
  Serial.print(length);
  Serial.print("\tsequence n0. = ");
  Serial.println(sequence);
  Serial.print("DMX data: ");
  for (int i = 0 ; i < length ; i++)
  {
    Serial.print(data[i]);
    Serial.print("  ");
  }
  Serial.println();
  Serial.println();
}

void setup()
{
    Serial.begin(115200);
    WiFi.onEvent(WiFiEvent);

    ETH.begin();

    while (!eth_connected)
    {
        delay(10);
    }

    artnet.begin();
    artnet.setArtDmxCallback(onDmxFrame);
}


void loop()
{
    artnet.read();
}

I can see that the boards start up and aqcuires an IP, but nothing else happen.

ETH Started
ETH Connected
ETH MAC: 30:AE:A4:9F:F7:A7, IPv4: 192.168.1.100, FULL_DUPLEX, 100Mbps

Do you have any similar setup that you could test the code using Ethernet?

Hi everybody!
I'm trying to implement some code in order to use the library also on Fishino boards (once it'ill work I'll do a pull request), but something isn't working wery well. When I upload the sketch the board connects to the AP but leds don't work or sometimes do random colors. I tried to comment pieces of code ad I saw that if i comment Artnet artnet; leds start to work as they should. I'm sending Artnet data from LightJams on my pc (192.168.1.100) and my board's ip is 192.168.1.101. Anyone can help me?

Thank you
PS: I modified also the .cpp and .h files in order to work with Fishino boards.

`/*
This example will receive multiple universes via Artnet and control a strip of ws2811 strip via
Adafruit's NeoPixel library: https://github.com/adafruit/Adafruit_NeoPixel
This example may be copied under the terms of the MIT license, see the LICENSE file for details
*/

#include <Adafruit_NeoPixel.h>
#ifdef AVR
#include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif

#include <Artnet.h>
#include <Fishino.h>
#include <FishinoUdp.h>
#include <SPI.h>

// Neopixel settings
// Which pin on the Arduino is connected to the NeoPixels?
// On a Trinket or Gemma we suggest changing this to 1:
#define LED_PIN 2

// How many NeoPixels are attached to the Arduino?
#define LED_COUNT 240
const int channelsPerLed = 3;
const int numberOfChannels = LED_COUNT * channelsPerLed; // Total number of channels you want to receive (1 strip = 3 channels)
// Declare our NeoPixel strip object:
Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

// Artnet settings

Artnet artnet;
const int startUniverse = 0; // CHANGE FOR YOUR SETUP most software this is 1, some software send out artnet first universe as 0.

// Check if we got all universes
const int maxUniverses = numberOfChannels / 512 + ((numberOfChannels % 512) ? 1 : 0);
bool universesReceived[maxUniverses];
bool sendFrame = 1;
int previousDataLength = 0;

byte broadcast[] = {192, 168, 1, 101};

//////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////
// CONFIGURATION DATA -- ADAPT TO YOUR NETWORK !!!
// DATI DI CONFIGURAZIONE -- ADATTARE ALLA PROPRIA RETE WiFi !!!
#ifndef __MY_NETWORK_H

// here pur SSID of your network
// inserire qui lo SSID della rete WiFi
#define MY_SSID "TIM-"

// here put PASSWORD of your network. Use "" if none
// inserire qui la PASSWORD della rete WiFi -- Usare "" se la rete non ￨ protetta
#define MY_PASS "Signoretta"

// here put required IP address (and maybe gateway and netmask!) of your Fishino
// comment out this lines if you want AUTO IP (dhcp)
// NOTE : if you use auto IP you must find it somehow !
// inserire qui l'IP desiderato ed eventualmente gateway e netmask per il fishino
// commentare le linee sotto se si vuole l'IP automatico
// nota : se si utilizza l'IP automatico, occorre un metodo per trovarlo !
#define IPADDR 192, 168, 1, 101
#define GATEWAY 192, 168, 1, 1
#define NETMASK 255, 255, 255, 0

#endif
// END OF CONFIGURATION DATA //
// FINE CONFIGURAZIONE //
///////////////////////////////////////////////////////////////////////

// define ip address if required
// NOTE : if your network is not of type 255.255.255.0 or your gateway is not xx.xx.xx.1
// you should set also both netmask and gateway
#ifdef IPADDR
IPAddress Ip(IPADDR);
#ifdef GATEWAY
IPAddress gw(GATEWAY);
#else
IPAddress gw(ip[0], ip[1], ip[2], 1);
#endif
#ifdef NETMASK
IPAddress nm(NETMASK);
#else
IPAddress nm(255, 255, 255, 0);
#endif
#endif

void initTest() {
for (int i = 0 ; i < LED_COUNT ; i++)
strip.setPixelColor(i, 127, 0, 0);
strip.show();
delay(500);
for (int i = 0 ; i < LED_COUNT ; i++)
strip.setPixelColor(i, 0, 127, 0);
strip.show();
delay(500);
for (int i = 0 ; i < LED_COUNT ; i++)
strip.setPixelColor(i, 0, 0, 127);
strip.show();
delay(500);
for (int i = 0 ; i < LED_COUNT ; i++)
strip.setPixelColor(i, 0, 0, 0);
strip.show();
}

void onDmxFrame(uint16_t universe, uint16_t length, uint8_t sequence, uint8_t* data, IPAddress remoteIP) {
sendFrame = 1;
// set brightness of the whole strip
if (universe == 15) {
strip.setBrightness(data[0]);
strip.show();
}

// Store which universe has got in
if ((universe - startUniverse) < maxUniverses)
	universesReceived[universe - startUniverse] = 1;

for (int i = 0 ; i < maxUniverses ; i++) {
	if (universesReceived[i] == 0) {
		//Serial.println("Broke");
		sendFrame = 0;
		break;
	}
}

// read universe and put into the right part of the display buffer
for (int i = 0; i < length / channelsPerLed; i++) {
	int led = i + (universe - startUniverse) * (previousDataLength / channelsPerLed);
	if (led < LED_COUNT) {
		if (channelsPerLed == 4)
			strip.setPixelColor(led, data[i * channelsPerLed], data[i * channelsPerLed + 1], data[i * channelsPerLed + 2], data[i * channelsPerLed + 3]);
		if (channelsPerLed == 3)
			strip.setPixelColor(led, data[i * channelsPerLed], data[i * channelsPerLed + 1], data[i * channelsPerLed + 2]);
	}
}
previousDataLength = length;

if (sendFrame) {
	strip.show();
	// Reset universeReceived to 0
	memset(universesReceived, 0, maxUniverses);
}

}

void setup() {
Serial.begin(115200);
// These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
// Any other board, you can remove this part (but no harm leaving it):
#if defined(AVR_ATtiny85) && (F_CPU == 16000000)
clock_prescale_set(clock_div_1);
#endif
// END of Trinket-specific code.

strip.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
strip.show(); // Turn OFF all pixels ASAP

// reset and test WiFi module
// resetta e testa il modulo WiFi
while (!Fishino.reset())
	Serial << F("Fishino RESET FAILED, RETRYING...\n");
Serial << F("Fishino WiFi RESET OK\n");

Fishino.setPhyMode(PHY_MODE_11N);

// go into station mode
// imposta la modalità stazione
Fishino.setMode(STATION_MODE);

// try forever to connect to AP
// tenta la connessione finchè non riesce
Serial << F("Connecting to AP...");
while (!Fishino.begin(MY_SSID, MY_PASS)) {
	Serial << ".";
	delay(2000);
}
Serial << "OK\n";


// setup IP or start DHCP client
// imposta l'IP statico oppure avvia il client DHCP

#ifdef IPADDR
Fishino.config(Ip, gw, nm);
#else
Fishino.staStartDHCP();
#endif

// wait till connection is established
Serial << F("Waiting for IP...");
while (Fishino.status() != STATION_GOT_IP) {
	Serial << ".";
	delay(500);
}
Serial << "OK\n";

//artnet.begin(mac, ip);
artnet.begin();
artnet.setBroadcast(broadcast);

initTest();

// this will be calstrip for each packet received
artnet.setArtDmxCallback(onDmxFrame);

}

void loop() {
// we call the read function inside the loop
artnet.read();
}

`

`

Hi,

i'm using Artnet example of OctoWS2811.

ledsPerStrip = 300
numStrips = 3

it doesn't work.
It works fine with less then 510 leds in total (160ledx2strips or 60x8 or 120x4, not 600x1). I'm using teensy 3.5 and i saw that it supports up to 4000 leds.

Is there any problem in the example? maybe in leds.show(); because with 300x3 leds in total the init test go well and if i print the [i] in this code inside the example all goes well:

// read universe and put into the right part of the display buffer
for (int i = 0; i < length / 3; i++)
{
int led = i + (universe - startUniverse) * (previousDataLength / 3);
if (led < numLeds)
leds.setPixel(led, data[i * 3], data[i * 3 + 1], data[i * 3 + 2]);
Serial.print(i);
}

Data arrive, and all go well until leds.show(); i think...

Any suggest? Thank you

It’s more of a question... feel free to move this if need be.

I’m building some ledstiks, that I ‘d like to have control over addressing.. say stick one, universe 3(that’s easy) address 121-210... next stick would be 211-300...

I know I have to offset something in the code.. can’t figure it out

Thanks

I’ve been using this code with strips between 200-250 pixels flawlessly however I’ve increased the string length to 388 pixels. Once updated to anything over 295 the code no longer works. The initial color flash no longer works and data is no longer sent to the led strip. I tried two different boards on two different strips of 388. I can tell the artnet signal is coming over the Ethernet shield as the indicator lights flash when the data is sent.

Hello guys, I am new to Arduino world and I am sorry if a ima asking stupid questions.
The problem i am experiencing with this is that when I open Arduino software on pc and try to include zip library to import software, the "Specified folder/zip file does not contain a valid library " message is displayed. How to get this thing working ? And when I opened unzipped file and opened ArtnetPixelSketch, then when I wanted to compile the file, error occurred saying that Artnet.h wasn't found. Can you help me with this problem and point out what am I doing wrong?

((Despite my other issue, I have been doing some tests with some artnet software which seems to work with this library.))

A problem I seem to see with this library is that when ramping a channel to full or zero, the loop reporting the data seems to get cut off pre-maturely sometimes.

Basically a simple example of this is ramping a channel from zero all the way to max (0 -> 255) reasonably quickly, printing out the data every packet received. Basically what happens is you see the data follow the ramp until I hit max ramp but the reported data stops before 255 (Somewhere between 235-253 generally). I think what happens is the reporting stops when I hit max fader/ramp when the library hasn't caught up. Similar when ramping down to 0, the same thing happens in reverse.

It is worth noting that if I ramp slower, the library does indeed reports the full range - there seems to be a certain speed where it becomes a problem, though this is relatively slow still. The main problem is that a lighting console can manipulate values in ramps and other curves at high speeds (let alone manual manipulation on a fader).

Is there a change that can be done to the library to accept listening to data faster OR for a second longer on the top and tail of receiving data?

I'm having an issue where the 171's pixel (right after the universe rollover) is off a color. IE all the pixels in universe 0 are red. Same input, but all pixels in universe 1 (171+) show up blue. Red and Green for that LED show up on the next one 172 when they should be added to pixel 171. Its like the chain is shifted ahead by one.

Checking the Art-Net ID with a length of 9 is not correct because the ID is 8 characters long including the zero termination.
All packets will be dropped because the last byte of 9 will probably never match.

Array of 8 characters, the final character is a null termination.
Value = ‘A’ ‘r’ ‘t’ ‘-‘ ‘N’ ‘e’ ‘t’ 0x00

Hello,

I'm looking for examples with MAX/MSP or Touch Designer, sending ArtSync message.

Is there any?

Regards and thanks for your lib!

Hello,
I want to controll WS2812 Stripes via Artnet.
I bought a Arduino Mega and W5100 Ethernet shield for it and i had no problem to controll the stripes via the adafruit strandtest example or to make a Webserver. But when i load the code for ArtnetNeoPixel first of all the test is running and my stripe lights up in (R, G, B) but i can't controll it via dot2 or Led Stripes Studio. I have the same ip exept the last number and also tried to ad ethernet.init(10) ; witch i needed to make the webserver (because my ethernet shield has a sd card slot). (I pluged the shield with a rj 45 cabel in my pc) For the led stripe studio software i tried a 192.168.1.254 ip and by dot2 2.x.x.x and also 192.168.178.254 (Subnet 255.0.0.0).
Would be nice if someone could help

Any idea what is going on here?

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp: In member function 'uint16_t Artnet::read()':

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:94:40: warning: embedded '\0' in format [-Wformat-contains-nul]

     sprintf((char *)id, "Art-Net\0");

                                    ^

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:94:40: warning: embedded '\0' in format [-Wformat-contains-nul]

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:107:54: warning: embedded '\0' in format [-Wformat-contains-nul]

     sprintf((char *)shortname, "artnet arduino\0");

                                                  ^

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:107:54: warning: embedded '\0' in format [-Wformat-contains-nul]

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:108:64: warning: embedded '\0' in format [-Wformat-contains-nul]

     sprintf((char *)longname, "Art-Net -> Arduino Bridge\0");

                                                            ^

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:108:64: warning: embedded '\0' in format [-Wformat-contains-nul]

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:143:109: warning: embedded '\0' in format [-Wformat-contains-nul]

     sprintf((char *)ArtPollReply.nodereport, "%i DMX output universes active.\0", ArtPollReply.numbports);  

                                                                                                         ^

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:143:109: warning: embedded '\0' in format [-Wformat-contains-nul]

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:155:1: warning: control reaches end of non-void function [-Wreturn-type]

}

Hi there,

I'm trying to use a lighting console to output Artnet to an Arduino Mega and having some trouble.

I know my console is outputting artnet down the network as I can see the stream coming in on some artnet monitoring software. I also know the library will receive artnet from that same software (as it allows sending basic channel data), but I cannot get the console to register in the library.

For testing purposes I'm using both your Artnet Receive and Artnet Receive Callback examples so I don't think it's a coding issue.

I believe the console is outputting on 2.255.255.255 instead of the standard 255.255.255.255 (which, as it turns out is what the software outputs on).

I have tried setting the arduino IP address to both a 192.x range, 2.x range and 10.x range with no results. Is there anything I can try/edit in the code which you can think of?

Hello,
i have problems with my arduino mega with ethernet shield and resolume sending artnet.
Every time an artpoll is receiving the leds shows shortly an random color.

This is my sketch:

#include <Artnet.h>
#include <Ethernet.h>
#include <EthernetUdp.h>
#include <SPI.h>
#include <Adafruit_NeoPixel.h>
#include <EEPROM.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);
Adafruit_NeoPixel leds = Adafruit_NeoPixel(60, 23, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, 25, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel leds2 = Adafruit_NeoPixel(60, 27, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel strip2 = Adafruit_NeoPixel(60, 31, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel leds3 = Adafruit_NeoPixel(60, 33, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel strip3 = Adafruit_NeoPixel(60, 35, NEO_GRB + NEO_KHZ800);
//Adafruit_NeoPixel leds4 = Adafruit_NeoPixel(60, 37, NEO_GRB + NEO_KHZ800);
//Adafruit_NeoPixel strip4 = Adafruit_NeoPixel(60, 39, NEO_GRB + NEO_KHZ800);
//Adafruit_NeoPixel leds5 = Adafruit_NeoPixel(60, 41, NEO_GRB + NEO_KHZ800);
//Adafruit_NeoPixel strip5 = Adafruit_NeoPixel(60, 43, NEO_GRB + NEO_KHZ800);

Artnet artnet;
uint8_t* data;

byte ip[] = {10, 0, 1, 199};
byte mac[] = {0x04, 0xE9, 0xE5, 0x00, 0x69, 0xEC};
byte broadcast[] = {10,255,255,255};
byte subnet [] = {255,0,0,0};

void setup() {
//Serial.begin(9600);

lcd.init();
lcd.backlight();
lcd.print("BOOTING....");
ip[0] = EEPROM.read(1);
ip[1] = EEPROM.read(2);
ip[2] = EEPROM.read(3);
ip[3] = EEPROM.read(4);
subnet[0] = EEPROM.read(5);
subnet[1] = EEPROM.read(6);
subnet[2] = EEPROM.read(7);
subnet[3] = EEPROM.read(8);

leds.begin();
strip.begin();
leds2.begin();
strip2.begin();
leds3.begin();
strip3.begin();
//leds4.begin();
//strip4.begin();
//leds5.begin();
//strip5.begin();
initTest();
artnet.begin(mac,ip);
Ethernet.setSubnetMask(subnet);
artnet.setBroadcast(broadcast);
artnet.setArtDmxCallback(onDmxFrame);
}

void loop() {
data = artnet.getDmxFrame();

for(int i=0;i < 60;i++){
leds.setPixelColor(i,data[i3],data[i3+1],data[i3+2]);
strip.setPixelColor(i,data[i3 + 180],data[i3+1 + 180],data[i3+2+ 180]);}

leds.show();
strip.show();
leds2.show();
strip2.show();
leds3.show();
strip3.show();

artnet.read();
}

void onDmxFrame(uint16_t universe, uint16_t length, uint8_t sequence,uint8_t* data, IPAddress remoteIP)
{

}

void initTest()
{
for (int i = 0 ; i < 170 ; i++){
leds.setPixelColor(i, 127, 0, 0);
leds.show();
strip.setPixelColor(i, 127, 0, 0);
strip.show();
leds2.setPixelColor(i, 127, 0, 0);
leds2.show();
strip2.setPixelColor(i, 127, 0, 0);
strip2.show();
leds3.setPixelColor(i, 127, 0, 0);
leds3.show();
strip3.setPixelColor(i, 127, 0, 0);
strip3.show();}
delay(500);
for (int i = 0 ; i < 170 ; i++){
leds.setPixelColor(i, 0, 127, 0);
leds.show();
strip.setPixelColor(i, 0, 127, 0);
strip.show();
leds2.setPixelColor(i, 0, 127, 0);
leds2.show();
strip2.setPixelColor(i, 0, 127, 0);
strip2.show();
leds3.setPixelColor(i, 0, 127, 0);
leds3.show();
strip3.setPixelColor(i, 0, 127, 0);
strip3.show();}
delay(500);
for (int i = 0 ; i < 170 ; i++){
leds.setPixelColor(i, 0, 0, 127);
leds.show();
strip.setPixelColor(i, 0, 0, 127);
strip.show();
leds2.setPixelColor(i, 0, 0, 127);
leds2.show();
strip2.setPixelColor(i, 0, 0, 127);
strip2.show();
leds3.setPixelColor(i, 0, 0, 127);
leds3.show();
strip3.setPixelColor(i, 0, 0, 127);
strip3.show();}
delay(500);
for (int i = 0 ; i < 170 ; i++){
leds.setPixelColor(i, 0, 0, 0);
leds.show();
strip.setPixelColor(i, 0, 0, 0);
strip.show();
leds2.setPixelColor(i, 0, 0, 0);
leds2.show();
strip2.setPixelColor(i, 0, 0, 0);
strip2.show();
leds3.setPixelColor(i, 0, 0, 0);
leds3.show();
strip3.setPixelColor(i, 0, 0, 0);
strip3.show();}
}

I am relatively new to all this arduino stuff, so forgive me if I'm missing something super simple here.
I am unable to upload my sketch to my arduino, because when I compile, I get the following error: 'using Artnet = class arduino::artnet::Manager<EthernetUDP> {aka class arduino::artnet::Manager<EthernetUDP>}' has no member named 'setBroadcast'
I have also included an image of what exactly is highlighted.

Thanks.

Hello, everything is in the title.
I tried to change the artnet.h file from #define MAX_BUFFER_ARTNET 530 to #define MAX_BUFFER_ARTNET 1060 restart IDE but nothing better.
Here is a video: https://youtu.be/trs3NsmK2Xw
Heres is a post on PJRC forum: https://forum.pjrc.com/threads/46030-OctoSK6812-Artnet-280ledsSK6812-x4-Only-first-3-universes-ok-next-are-lagging
My sketch:`// Receive multiple universes via Artnet and control a strip of ws2811 leds via OctoWS2811
//
// This example may be copied under the terms of the MIT license, see the LICENSE file for details
// https://github.com/natcl/Artnet
//
// http://forum.pjrc.com/threads/24688-Artnet-to-OctoWS2811?p=55589&viewfull=1#post55589

/*11 192.168.0.121 0x90, 0xA2, 0xDA, 0x00, 0x44, 0xCB
12 192.168.0.122 0x90, 0xA2, 0xDA, 0x00, 0x44, 0xCC
*/

#include <Artnet.h>
#include <Ethernet.h>
#include <EthernetUdp.h>
#include <SPI.h>
#include <OctoSK6812.h>

// OctoWS2811 settings
const int ledsPerStrip = 280; // change for your setup
const byte numStrips= 4; // change for your setup
DMAMEM int displayMemory[ledsPerStrip8];
int drawingMemory[ledsPerStrip8];

OctoSK6812 leds(ledsPerStrip, displayMemory, drawingMemory, SK6812_GRBW);

// Artnet settings
Artnet artnet;
const int startUniverse = 0; // CHANGE FOR YOUR SETUP most software this is 1, some software send out artnet first universe as zero.
const int numberOfChannels = ledsPerStrip * numStrips * 4; // Total number of channels you want to receive (1 led = 4 channels)
byte channelBuffer[numberOfChannels]; // Combined universes into a single array

// Check if we got all universes
const int maxUniverses = numberOfChannels / 512 + ((numberOfChannels % 512) ? 1 : 0);
bool universesReceived[maxUniverses];
bool sendFrame = 1;

// Change ip and mac address for your setup
byte ip[] = {192, 168, 0, 121};
byte mac[] = {0x90, 0xA2, 0xDA, 0x00, 0x44, 0xCB};

void setup()
{
// Serial.begin(115200);
artnet.begin(mac, ip);
leds.begin();
initTest();

// this will be called for each packet received
artnet.setArtDmxCallback(onDmxFrame);
}

void loop()
{
// we call the read function inside the loop
artnet.read();
}

void onDmxFrame(uint16_t universe, uint16_t length, uint8_t sequence, uint8_t* data)
{
sendFrame = 1;

// Store which universe has got in
//NOT WORKING WITH MADMAPPER because MadMapper won't pollute the network with network packets for universes
//that have not changed (except one packet each 4 seconds as defined in official ArtNet spec).
/*if (universe < maxUniverses)
universesReceived[universe] = 1;

for (int i = 0 ; i < maxUniverses ; i++)
{
if (universesReceived[i] == 0)
{
//Serial.println("Broke");
sendFrame = 0;
break;
}
}
*/
// read universe and put into the right part of the display buffer
for (int i = 0 ; i < length ; i++)
{
int bufferIndex = i + ((universe - startUniverse) * length);
if (bufferIndex < numberOfChannels) // to verify
channelBuffer[bufferIndex] = byte(data[i]);
}

// send to leds
for (int i = 0; i < ledsPerStrip * numStrips; i++)
{
leds.setPixel(i, channelBuffer[(i) * 4], channelBuffer[(i * 4) + 1], channelBuffer[(i * 4) + 2], channelBuffer[(i * 4) + 3]);
}

if (sendFrame)
{
leds.show();
// Reset universeReceived to 0
memset(universesReceived, 0, maxUniverses);
}
}

void initTest()
{
for (int i = 0 ; i < ledsPerStrip * numStrips ; i++)
leds.setPixel(i, 127, 0, 0, 0);
leds.show();
delay(500);
for (int i = 0 ; i < ledsPerStrip * numStrips ; i++)
leds.setPixel(i, 0, 127, 0, 0);
leds.show();
delay(500);
for (int i = 0 ; i < ledsPerStrip * numStrips ; i++)
leds.setPixel(i, 0, 0, 127,0);
leds.show();
delay(500);
for (int i = 0 ; i < ledsPerStrip * numStrips ; i++)
leds.setPixel(i, 0, 0, 0, 127);
leds.show();
delay(500);
for (int i = 0 ; i < ledsPerStrip * numStrips ; i++)
leds.setPixel(i, 0, 0, 0, 0);
leds.show();
}`

I've made an LED fixture that works just fine if I only have 170 pixels. The moment I try to run the sketch with the "numberLeds" set at 171 or anything over that, the entire led strand stops working. I'm using the ArtNetNeoPixel sketch to do this. I'm using MadMapper with a single fixture starting on channel 1 of universe 1 with 171+ pixels. I've also tried the LightKey software with no luck going past 170 pixels.

Hi, I'm using ENC28J60 ethernet shield. Replaced "Ethernet.h/EthernetUdp.h" to "UIPEthernet.h/UIPUdp.h".

Can't light up LED. ArtNet Data is recieveing. When comment out "Artnet artnet;" LED light up.

ArtnetReceive.ino is no problems that use ENC28J60 ethernet shield with UIPEthernet.h/UIPUdp.h.

What do you think is the cause?

• Artnet.h: Commented out "Ethernet.h/EthernetUdp.h" and added "include UIPEthernet.h/UIPUdp.h" and Line96 replaced "UIPUDP Udp";
• Artnet.cpp: Line32 and 44 replaced "UIPEthernet.begin(mac,ip);"

Hi,
I cannot manage to receive artnet with my arduino uno and the neopixel example.

I tried with arduino ip 2.0.0.11 and my laptop sending artnet from 2.0.0.4
I tried the same on submask 10.x.x.x
I cannot see the arduino as a node on the nework, but maybe it's because you support only artnet v1? So I tried to broadcast from ola (as recquired from artnet v1) but it doesn't work better…

so maybe I'm missing something?

thanks for any pointers

Hi,
I am currently testing your library with ESP32-EVB, an ESP32 board with ethernet. I have no problem if I let the controller know the IP of the board (Unicast mode I believe). I get the following response to polling from the controller via my board comport:

IP address: POLL from 192.168.0.173 broadcast addr: 0.0.0.0
POLL from 192.168.0.173 broadcast addr: 0.0.0.0
POLL from 192.168.0.173 broadcast addr: 0.0.0.0
POLL from 192.168.0.173 broadcast addr: 0.0.0.0
POLL from 192.168.0.173 broadcast addr: 0.0.0.0
POLL from 192.168.0.173 broadcast addr: 0.0.0.0
POLL from 192.168.0.173 broadcast addr: 0.0.0.0

I am basically using your receiver example and building on it. From the above I assumed the broadcast address was wrong, so assume I could use the method: void setBroadcastAuto(IPAddress ip, IPAddress sn);
to set the broadcast address from my Arduino code, but I get a Compilation error: 'setBroadcastAuto' was not declared in this scope.

I understand on completion of a successful poll reply from my board, the controller can operate in multicast/broadcast mode. I verified the latter with some test equipment, My aim is to have my board plug into the network and have it automatically negotiate Artnet polling/reply and the received artnet packets and extract the DMX frames. I would appreciate any assistance with this problem you might provide. I did look at an earlier issue about broadcast problems but I do not know enough to make sense of it.

Much thanks.

Mike Zomo

Hi there,

I have used this library before and it has worked perfectly but I tried to use it again today with no luck and I can't work it out.

I have tried it with both a Uno and Mega arduino and not getting a response. I have tested the network and can see the artnet data traversing so I know it is a problem with the arduino or library. I am using the ArtnetReceiveCallback example to try and test and sending artnet on 0:0 for simplicity sake.

Any help would be much appreciated.

I'm developing a board with Arduino and W5100 for Artnet, can i use 8Mhz Arduino or 8MHz are not enough?

I'd like to use universes greater than 15 however I can't figure out how to use subnets to assign more universes. Is this possible with this code?

Hello!

First of all, thanks for this amazing lib!
I can make it work with madmapper without problem in broadcast mode.

But I tried to configure madmapper in unicast mode without success.

Any idea? Here is my teensy code:

#include <Artnet.h>
#include <Ethernet.h>
#include <EthernetUdp.h>
#include <SPI.h>
#include <FastLED.h>

// reserved pins by the ethernet and sd adapter
// 4, 8, 9, 10, 11, 12, 13

// number of leds on the strip
const int numLeds = 300;
// 3 dmx channel per led
const int numberOfChannels = numLeds * 3;
// data pin of the strip
const byte dataPin = 2;

// define the array of leds
CRGB leds[numLeds];

// artnet settings
Artnet artnet;
// starting universe
const int startUniverse = 0;

// compute needed universe
const int maxUniverses = numberOfChannels / 512 + ((numberOfChannels % 512) ? 1 : 0);
bool universesReceived[maxUniverses];
bool sendFrame = 1;
int previousDataLength = 0;

// Change ip and mac address for your setup
byte ip[] = {192, 168, 2, 2};
byte mac[] = {0x04, 0xE9, 0xE5, 0x00, 0x69, 0xEC};

void setup() {
  initWizAndSD();
  Serial.begin(115200);
  artnet.begin(mac, ip);
  // define the strip here
  FastLED.addLeds<WS2812B, dataPin, RGB>(leds, numLeds);
  initTest();

  // this will be called for each packet received
  artnet.setArtDmxCallback(onDmxFrame);
}

void loop() {
  // we call the read function inside the loop
  artnet.read();
}

void onDmxFrame(uint16_t universe, uint16_t length, uint8_t sequence, uint8_t* data) {
  Serial.println("FRAME");
  sendFrame = 1;
  // only treat messages related to the universes the node handles
  if ((universe - startUniverse) < maxUniverses) {
    universesReceived[universe - startUniverse] = 1;
  }
  // check if all universes has been received for the current frame
  // if not, do not try to update the pixels (e.g. sendFrame = 0)
  for (int i = 0 ; i < maxUniverses ; i++) {
    if (universesReceived[i] == 0) {
      //Serial.println("Broke");
      sendFrame = 0;
      break;
    }
  }

  // read universe and put into the right part of the display buffer
  for (int i = 0; i < length / 3; i++) {
    int led = i + (universe - startUniverse) * (previousDataLength / 3);
    if (led < numLeds) {
      leds[led] = CRGB(data[i * 3], data[i * 3 + 1], data[i * 3 + 2]);
    }
  }
  previousDataLength = length;

  if (sendFrame) {
    Serial.println("Show");
    FastLED.show();
    // reset universeReceived to 0
    memset(universesReceived, 0, maxUniverses);
  }
}

void initTest() {
  for (int i = 0 ; i < numLeds ; i++)
    leds[i] = CRGB(127, 0, 0);
    FastLED.show();
    delay(500);
    for (int i = 0 ; i < numLeds ; i++) {
      leds[i] = CRGB(0, 127, 0);
    }
    FastLED.show();
    delay(500);
    for (int i = 0 ; i < numLeds ; i++) {
      leds[i] = CRGB(0, 0, 127);
    }
    FastLED.show();
    delay(500);
    for (int i = 0 ; i < numLeds ; i++) {
      leds[i] = CRGB(0, 0, 0);
    }
    FastLED.show();
}

void initWizAndSD() {
  pinMode(9, OUTPUT);
  // begin reset the WIZ820io
  digitalWrite(9, LOW);
  pinMode(10, OUTPUT);
  // de-select WIZ820io
  digitalWrite(10, HIGH);
  pinMode(4, OUTPUT);
  // de-select the SD Card
  digitalWrite(4, HIGH);
  // end reset pulse
  digitalWrite(9, HIGH);
}

Regards

Hello,
I have an Teensy 3.2 and 3.6 how many leds/universe can i drive per Teensy ?

Hello
Can you run multiple universes with this library and using the Nodemcu(esp8266 12e)? Or more clearly, can I control multiple LEDs?
What depends on the number of LEDs?

Dear,

Is there anybody who tried to use this library in combination with the fastled library?
My Led's are unstable on arduino due (with level converters).
Can someone help me?

Thank you in advance.

I was unable to compile until I overwrote the artnet.h calls to load Ethernet.h and EthernetUDP.h to NativeEthernet.h and NativeEthernetUDP.h

#include <NativeEthernet.h> #include <NativeEthernetUdp.h>

Perhaps including a #elif defined(TEENSY41) would solve the issue.

Hi, I am using Resolume with mega and Ethernet shield. I wanted to control single led strip from 2 different lumiverse. such as if LED strip has 100 LEDS and suppose for first 50 LEDS I want to control from one Lumiverse and other 50 from 2nd lumiverse with same Arduino. How do change the code ? I mean I want to understand universes channel to code it myself.

btw I found out the FastLED is faster with Resolume then Neopixel Library.

The missing mac address in the ArtPollReply, poses a problem with some software... Art-Net can be a very strict protocol to adhere to :D

Any idea how to be able to work with multi strips like OctoWS2811 on ESP ?

Arduino mega stop working after 6 hour of receiving artnet trames. the only solution I have in mind is to reset the arduino each 5h to make it work again.
Is there a more elegant way to prevent freezing?
Is there some memory overloading involved?
my setup : artnet is send from computer to the arduino through ethernet shield then arduino act on I2C relays.
I use 2 libraries : your artnet library and the library from grove to control the i2c relay (https://wiki.seeedstudio.com/Grove-4-Channel_SPDT_Relay/). The library use Wire to talk to I2C devices.
I'm trying to figure where is the issue.
Do you try to make your receive exemple working for more than 5hours?

Hello
Is it possible to Change the ArtPoll reply to Show more than 4 universe in the reply ?

Hello
i have the Artnet Neopixel example running and changed it so that i can set the subnet mask.

Now I have the problem that my output to the neopixels freezes every 4 seconds and nothing changes anymore.

Anybody know what I did wrong?

Any idea what is going on here?

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp: In member function 'uint16_t Artnet::read()':

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:94:40: warning: embedded '\0' in format [-Wformat-contains-nul]

     sprintf((char *)id, "Art-Net\0");

                                    ^

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:94:40: warning: embedded '\0' in format [-Wformat-contains-nul]

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:107:54: warning: embedded '\0' in format [-Wformat-contains-nul]

     sprintf((char *)shortname, "artnet arduino\0");

                                                  ^

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:107:54: warning: embedded '\0' in format [-Wformat-contains-nul]

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:108:64: warning: embedded '\0' in format [-Wformat-contains-nul]

     sprintf((char *)longname, "Art-Net -> Arduino Bridge\0");

                                                            ^

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:108:64: warning: embedded '\0' in format [-Wformat-contains-nul]

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:143:109: warning: embedded '\0' in format [-Wformat-contains-nul]

     sprintf((char *)ArtPollReply.nodereport, "%i DMX output universes active.\0", ArtPollReply.numbports);  

                                                                                                         ^

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:143:109: warning: embedded '\0' in format [-Wformat-contains-nul]

C:\Users\Owner\Documents\Arduino\libraries\Artnet-master\Artnet.cpp:155:1: warning: control reaches end of non-void function [-Wreturn-type]

}

How and where can i enter the start record, stop record and play value's in the neopixel sd sketch ?

Im trying to use the ArtnetNeoPixle sketch. Once I go to upload the sketch I receive this error message.
Arduino: 1.8.19 (Windows Store 1.8.57.0) (Windows 10), Board: "Arduino Uno"

'using Artnet = class arx::artnet::Manager {aka class arx::artnet::Manager}' has no member named 'setBroadcast'

What can I do to fix this?

Hi! I use this library currently to control a dozen universes all connected over ethernet. 2 with arduino controllers and 3 with teensy's.

I've recently gotten some esp8266 wifi modules working. I was wondering if you have any idea if this code would work over wifi? They send data over the serial ports. The particular ones I have receive data on Serial2.

I have a strip of 261 WS2812 LEDs. They are verified to be working correctly with other libraries.

Whenever I try to use the example ARTNETNeopixel.ino, everything works very well with 170 leds. Whenever I update numLeds to something greater than 170, like 171 or 172, LEDs in the strip beyond 170 begin misbehaving. With 171 or 172, the initTest still fires and the strip blinks RGB.

If I update the number to anything greater the 173, the strip does not run the test and does not blink RGB. Any help or suggestions are greatly appreciated.

Thanks!

Is there anyway I can get this working using SoftwareSerial. I have an LCD that is committed to TX/RX pins. The board I'm using has wifi built in on pins 8 and 9. This is a Leonardo based board. I an get software serial working and connected. I'm just trying to figure out how to get the Artnet Library hooked into it. Is this something fairly simple to do or should I rather use a Mega with additional serial ports?